Byte Size Chunks : Java Multithreading

Name: Byte Size Chunks : Java Multithreading
Rating: 4.1 (64 reviews)

A little treat with all you need to know about multithreading and concurrency in Java

Created byLoony Corn

Last updated 11/2015

English

What you'll learn

Manage concurrency and threading issues in a multi-threaded environment
Use (and debug!) Java threading support - both old (runnables) and new (callables, futures)
Identify, detect and prevent all common concurrency bugs
Use and truly understand the synchronized keyword

Course content

4 sections • 13 lectures • 2h 22m total length

You, This course and Us2:17
We'll start with an introduction, what this course is about and what you should know at the end of the course.

Threading, and Why It Matters14:10
As computers have become multi-core, and then as cloud computing has taken off, the importance of threading has increased substantially. This lecture is an introduction to the concept of threading which allows programmers to do different things simultaneously. We will also discuss the differences between processes and threads, old school concepts vs new school concepts in threads and some use-cases of threads.
Threading: Old school vs New school11:57
We'll talk about a specific use case for threading where spinning off multiple threads can give us huge performance gains. Java support for threading is great even in its traditional form. New libraries however, make working with threads far easier.
Traditional Threading Support14:18
We study threading the way it has traditionally been done in Java - the Runnable interface; extending the Thread class; join(), sleep() and thread interrupts.
Threading and Concurrency: A lot going on at once11:28
Multi-threading involves concurrent execution of threads, and this gives rise to an entire range of potential issues: thread interference, memory consistency and thread contention.
Synchronized Methods, Livelock, Deadlock and Starvation10:38
Methods can be marked as synchronized - we study the nuances of doing so. We also examine threading issues such as livelock, deadlock and starvation.
Working with threads - and our first synchronization bug!15:38
Let's figure out how to set up a multi-threaded program - and while doing so, we also encounter our first synchronization bug. We congratulate ourselves - wrestling with synchronization bugs is the badge of a serious programmer!
Threads: Object locking and static variables in action5:57
We continue with our drill, and use our first lock. We learn yet another important thread-related lesson - that static variables can not be locked using the synchronized keyword.
Threading
Threading
Threading

Digging Deeper into Callables and Futures15:21
In this lecture, we will talk about new features of Java which significantly improves its support for concurrency - the Callable interface,executors,thread pools, lock objects, concurrent collections and atomic variables. We will show how these new features make multi-threading a lot more robust.
Threading: New school fun in action12:49
We go back and reprise our threading drill, but this time we do so using the new threading framework - Callables instead of Runnables, and Executors instead of the Thread objects, and Future objects to retrieve the results.
Threading: Executors are pretty cool6:01
We now delve into the power of the new threading features - a CompletionService, for instance, which allows us to retrieve results from threads in the order in which they complete.
New-School Threading
New-School Threading

The Singleton Design Pattern Introduction9:06
The Singleton Pattern is beautiful - a unique object, usually implemented via a private constructor and a static getter method.
The Singleton Design Pattern: Double-Checked Locking13:17
The Singleton Pattern is very elegant in its construction, but there are important nuances that we should be aware of, specifically related to multi-threading and to class loaders in Java. In this lecture, we explore how a concurrency-related Design Pattern called Double-Checked Locking can come in handy while implementing the Singleton in a multi-threaded environment.

Requirements

This course calls for a basic working knowledge of Java

Description

Prerequisites: Basic understanding of Java
Taught by a Stanford-educated, ex-Googler, husband-wife team
Please don't take this class if you have already signed up for our From 0 to 1: Learn Java Programming course (that includes a far longer and more in-depth version of this material)

This is a quick and handy course with exactly what you need to know (nothing more, nothing less!) about multithreading and concurrency in Java

Let’s parse that.

The course is quick and handy: It explains multithreading and concurrency in Java in just the right level of detail for you to put these to work today.
The course has exactly what you need - nothing more, nothing less. It starts from zero, builds up the design, then gives plenty of real-world examples, but crisply and quickly.
The course is also quirky. The examples are irreverent. Lots of little touches: repetition, zooming out so we remember the big picture, active learning with plenty of quizzes. There’s also a peppy soundtrack, and art - all shown by studies to improve cognition and recall.

What's covered:

Context: Why threading matters, and why it is getting more important as CPU architectures evolve and cloud-computing catches on
The basics: threads, processes, shared memory and inter-thread communcation
Old-school Java threading: Runnable and Thread objects and using them
New-age Java threading: Callable and Future objects, executors and other services
Semantics: the synchronized and volatile keywords
Case study: Double-checked locking and the singleton pattern

Who this course is for:

Yep! Folks who know some Java but are entirely new to multi-threading or writing concurrent code

Byte Size Chunks : Java Multithreading

What you'll learn

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Course content

Introduction1 lecture • 2min

Threading and Concurrency: A Lot Going On All At Once7 lectures • 1hr 24min

New School Threading with Callables and Futures3 lectures • 34min

The Singleton Design Pattern2 lectures • 22min

Requirements

Description

Who this course is for: